Journal of Agriculture & Life Sciences

Chemistry and Insecticide activity of Bougainvillea glabra Choisy against Spodoptera frugiperda Smith
Silvia Evangelista-Lozano, Lorena Reyes-Vaquero, Antonia de Jesús-Sánchez, Sandra Victoria Ávila-Reyes, Antonio Ruperto Jiménez-Aparicio, María Yolanda Ríos

Abstract
Bougainvillea glabra Choisy var ‘Variegata’ shows medicinal and insecticidal activities attributed to the chemical content of this botanical variety. The purpose of this work was to identify the metabolites obtained from methanol extracts of leaves of this variety cultivated under greenhouse conditions and determine the biological activity against Spodoptera frugiperda larvae. Secondary metabolites were identified through gas chromatography coupled to mass spectrometry (GC-MS) using 13C and 1H nuclear magnetic resonance. Twentythree compounds were identified and d-pinitolwas the major compound isolated. The biologic effect of d-pinitol against second instar larvae was tested at concentrations of 0, 25, 50, 75 100, and 125 ppm. The major biological effect observed was at a 75 ppm concentration, showing low weight and interruption of pupae formation after 60 days. Only emerging adults were used in the test.

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